When we say that someone is acting like a zombie, I assume you can guess it doesn’t mean that they’re stumbling around trying to eat brains. The statement is actually referring to their appearance, such as if they have messy hair or bags under their eyes from staying up too late the night before, or their behaviors, such as if they’re moping around and walking slow.
Other characteristics also include being aggressive or snappy, or muttering. This is because of the way zombies are portrayed as evil and without the ability to speak properly. More characteristics would